Initial commit

qr-api/src/shorten.ts

@@ -0,0 +1,43 @@
+import type { Env } from './env.js';
+
+export interface ShortenBody {
+    targetUrl: string;
+    customSlug?: string;
+}
+
+export interface ShortenResult {
+    shortUrl: string;
+}
+
+export async function shortenUrl(env: Env, body: ShortenBody): Promise<ShortenResult> {
+    if (!env.KUTT_API_KEY) {
+        throw new Error('KUTT_API_KEY is not configured');
+    }
+
+    const base = env.KUTT_BASE_URL.replace(/\/$/, '');
+    const res = await fetch(`${base}/api/v2/links`, {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json',
+            'X-API-Key': env.KUTT_API_KEY,
+        },
+        body: JSON.stringify({
+            target: body.targetUrl,
+            ...(body.customSlug && { customurl: body.customSlug }),
+        }),
+    });
+
+    if (!res.ok) {
+        const text = await res.text();
+        throw new Error(`Kutt API error ${res.status}: ${text}`);
+    }
+
+    const data = (await res.json()) as { link?: string; id?: string };
+    const link = data.link ?? (data.id ? `${env.SHORT_DOMAIN.replace(/\/$/, '')}/${data.id}` : null);
+    if (!link) {
+        throw new Error('Kutt API did not return a short URL');
+    }
+
+    const shortUrl = link.startsWith('http') ? link : `${env.SHORT_DOMAIN.replace(/\/$/, '')}/${link}`;
+    return { shortUrl };
+}